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Geographic, Customer and Supplier Information - Sales Details of Customers Locations in Four Geographic Regions (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Geographic And Business Segment Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 43,265 | $ 39,156 | $ 37,260 | $ 35,365 | $ 38,837 | $ 36,292 | $ 46,642 | $ 32,258 | $ 155,047 | $ 154,029 | $ 168,082
Gross profit | 27,846 | 25,054 | 23,882 | 23,087 | 24,382 | 23,855 | 29,451 | 21,878 | 99,871 | 99,565 | 108,112
Long-lived assets | 43,898 |  |  |  | 24,506 |  |  |  | 43,898 | 24,506 | 26,291
Europe, Middle East, Africa (EMEA) [Member] |  |  |  |  |  |  |  |  |  |  |
Geographic And Business Segment Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 95,794 | 94,992 | 111,575
Gross profit |  |  |  |  |  |  |  |  | 62,529 | 61,367 | 69,324
Long-lived assets | 40,198 |  |  |  | 21,857 |  |  |  | 40,198 | 21,857 | 25,149
United States [Member] |  |  |  |  |  |  |  |  |  |  |
Geographic And Business Segment Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 11,781 | 11,143 | 16,025
Gross profit |  |  |  |  |  |  |  |  | 9,477 | 8,842 | 11,949
Long-lived assets | 3,496 |  |  |  | 2,470 |  |  |  | 3,496 | 2,470 | 967
Asia Pacific [Member] |  |  |  |  |  |  |  |  |  |  |
Geographic And Business Segment Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 27,356 | 32,783 | 14,738
Gross profit |  |  |  |  |  |  |  |  | 14,552 | 17,178 | 7,536
Long-lived assets | 43 |  |  |  | 16 |  |  |  | 43 | 16 | 10
Other Countries [Member] |  |  |  |  |  |  |  |  |  |  |
Geographic And Business Segment Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 20,116 | 15,111 | 25,744
Gross profit |  |  |  |  |  |  |  |  | 13,313 | 12,178 | 19,303
Long-lived assets | $ 161 |  |  |  | $ 163 |  |  |  | $ 161 | $ 163 | $ 165

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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph b(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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